Which sequence describes how USB data is organized before transmission?

Which sequence describes how USB data is organized before transmission?

• A. Fields, Packets, Frames
• B. Frames, Packets, Fields
• C. Packets, Frames, Fields
• D. Frames, Fields, Packets

Answer: (A)

In USB, data is built in a hierarchical way: small pieces (fields) come together to form a packet, and packets are then scheduled within a frame. The fields are the individual parts that carry specific information like token, address, endpoint, and data payload pieces. These fields assemble into a complete packet, which is then placed into a frame—the time window that organizes when transactions occur on the bus. So the sequence from smallest to largest is fields, then packets, then frames. This reflects how the data is constructed and timed for transmission.

In USB, data is built in a hierarchical way: small pieces (fields) come together to form a packet, and packets are then scheduled within a frame. The fields are the individual parts that carry specific information like token, address, endpoint, and data payload pieces. These fields assemble into a complete packet, which is then placed into a frame—the time window that organizes when transactions occur on the bus. So the sequence from smallest to largest is fields, then packets, then frames. This reflects how the data is constructed and timed for transmission.